San Francisco
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Winner of the 2019 CTBUH Structural and Geotechnical Engineering Awards this mixed-use building uses an exoskeleton structure to allow for open floor plates without columns.
Featured Buildings Involving RWDI

Taipei
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The world's tallest building from 2004 to 2010 has since reinvented itself with a renovation that achieved LEED Platinum making it one of the world's greenest skyscrapers.
Featured Buildings Involving RWDI

Guangzhou
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Guangzhou CTF Finance Centre is a mixed-use tower located adjacent to a large central park and a subterranean retail concourse with transportation interchanges.
Featured Buildings Involving RWDI

Winner of a CTBUH 2019 Structural Engineering Award of Excellence, this mixed-use building upon completion, has the highest open-air bar in the Western Hemisphere.

About RWDI

RWDI is an international specialty consulting engineering firm that uses a variety of engineering, computing, and scientific capabilities to help designers create comfortable environments and high performance buildings and structures.

As a company dedicated to delivering knowledge-based solutions and strategies to their clients in architecture, engineering, masterplanning and property development, they focus on continuous improvement, state-of-the-art systems and procedures, accountability, and attention to clients that exceeds their expectations.

“Making complicated issues simple” is more than a phrase they use: it is their mission! They aim to be accessible and responsive. Indeed it is their vision to deliver an unrivalled client experience.

CTBUH Canada: Supertall Toronto
29 Nov 2017, Toronto
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Event
Report
CTBUH Canada held a breakfast event to showcase Toronto's first supertall, The One, which will stand at 307 meters tall and is currently under construction.

Ping An Finance Center Now Fourth Tallest Building in the World
27 Mar 2017, Shenzhen
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CTBUH-Related News
CTBUH has certified the completion of Ping An Finance Center. At 599 meters it is the tallest building in Shenzhen, second tallest in China, and fourth tallest worldwide.

Imports and Acquisitions: New Tall Buildings in Toronto
11 Oct 2016, Toronto
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Event
Report
The CTBUH Canada Chapter organized and held its third in a series of seminars about new and imported technologies in high-rise buildings.

Performance and Behavior of Tall Buildings for Wind Loads
13 Jan 2016, New York City
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Event
Report
CTBUH YPC hosted an event on wind engineering and understanding its effects on tall buildings as well as to provide insight into the engineering efforts in design of shorter buildings.

Toronto Regional Tour
29-30 Oct 2015, Toronto
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Tour
Report
CTBUH 2015 delegates toured Toronto under the lead of CTBUH Canada. The highly successful tour led to many discussion on the lessons learned.

The Current State of Slender Buildings in NYC
30 Jul 2015, New York City
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Event
Report
SHoP Architects welcomed a group of architects and engineers for a lively discussion and exchange of ideas about slender buildings.

Sky High and The Logic of Luxury
12 May 2015, Toronto
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Event
Report
CTBUH Canada held its most recent event at the University of Toronto Faculty Club, featuring a presentation by Carol Willis entitled “Sky High and the Logic of Luxury.”

CTBUH Sydney 2015 Opening Event - Design Excellence
29 Apr 2015, Sydney
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Event
Report
The CTBUH in New South Wales held its opening event for 2015, which was a continuation of the Design Excellence in Sydney, along with a special evening hosted by HASSELL.

CTBUH 2013 London Conference Silver+ Sponsor
11-13 Jun 2013, London
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Conference Sponsor
In the midst of two decades of unprecedented tall building development globally, Europe has increasingly embraced the skyscraper, even in cities seen as “anti-tall.”

Activity at the CTBUH London Conference: Day One
11 Jun 2013, London
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Conference Activity
Report
See the highlights from the first day of the CTBUH 2013 London Conference including the Opening Plenary and Conference Dinner.

CTBUH Canada Inaugural Meeting
2 May 2013, Toronto
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Event
Report
The first event organized by the newly formed CTBUH Canada Chapter was held at the University of Toronto on May 2, to a highly enthusiastic reception.

International Journal of High-Rise Buildings Vol. 1 No. 1
Mar 2012, Seoul
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CTBUH Publication
The International Journal of High-Rise Buildings, Volume 1: Number 1 includes 7 papers focusing on pure research content and investigations in tall building design.

CTBUH Resources Involving RWDI

Award Winners & Award of Excellence Recipients

The CTBUH Awards recognize projects and individuals that have made extraordinary contributions to the advancement of tall buildings and the urban environment, and that achieve sustainability at the highest and broadest level.

Using Supplemental Damping Systems on High-Rise Buildings
16 Sep 2014 –
Presentation at CTBUH 2014 Shanghai Conference;
Xiangdong Du, RWDI
A considerable number of supplemental damping system implementations are for wind induced motion control of skyscrapers and their performance has been validated through full scale monitoring during wind storms or seismic events. Among the passive…

Design of Sustainable Asian Supertall Buildings for Wind
20 Sep 2012 –
Presentation at CTBUH 2012 9th World Congress, Shanghai;
Jon Galsworthy, RWDI
This presentation examined a number of Asian supertall buildings as case studies, focusing on the impacts of wind and other climatic factors on their design. The presentation also discussed recently developed regional atmospheric modeling software…

New Frontiers in the Wind Engineering of Tall Buildings
Oct 2011 –
Presentation at CTBUH 2011 Seoul Conference;
Peter Irwin, RWDI
Wind Engineering has developed in step with advancements in the design of tall buildings. A significant number of super tall buildings with heights >600m and slenderness ratios >10 have been designed and constructed in the last decade.
Applying…

New Frontiers in the Wind Engineering of Tall Buildings
Oct 2011 –
Presentation at CTBUH 2011 Seoul Conference;
Jon K. Galsworthy, Rowan Williams Davies & Irwin Inc.
Wind Engineering has developed in step with advancements in the design of tall buildings. A significant number of super tall buildings with heights >600m and slenderness ratios >10 have been designed and constructed in the last decade. Applying…

Guideline for Wind Tunnel Testing of Tall Buildings
Oct 2011 –
Presentation at CTBUH 2011 Seoul Conference;
Peter Irwin, RWDI
The working group on this guideline has prepared a draft document for comment. The objective of the guideline is to enhance knowledge of wind engineering in the general design community and to promote good practice amongst wind tunnel testing…

New CTBUH Guidelines for Wind Tunnel Testing of Tall Buildings
3 Feb 2010 –
Presentation at CTBUH 2010 Mumbai Conference;
Peter Irwin, RWDI ; Graeme Wood, CPP
Wind tunnel testing is a critical part of the design of tall buildings. This situation has highlighted the need for a guideline that helps the non-specialist to gain an understanding of the impacts of wind on tall buildings, the methods used in wind…

Papers/Research

Plot 17-18 Project: Tall Building Design in “Moscow City”
17 Oct 2016 –
Cities to Megacities: Shaping Dense Vertical Urbanism; Emre Ekici, Renaissance Construction Company
Renaissance Construction is one of the common development companies in Russia, planning to build a mixed-use project within Moscow City, a new development area along the Moscow River 5.5 km from the Kremlin. The Plot 17-18 project consists of office…

Wind Induced Structure Responses Study on RCCQ Project
17 Oct 2016 –
Cities to Megacities: Shaping Dense Vertical Urbanism; Xiangdong Du, Jon Galsworthy & Greg Thompson, RWDI; Aaron Wang, CapitaLand China
The Raffles City Chongqing project is one of the largest developments in the world. Located between Chao Tian Men Square and Jiefangbei in Yuzhong District, Chongqing China, it is a curved line of eight towers 182–310 meters tall, bent to resemble…

Using Supplemental Damping Systems on High-Rise Buildings
16 Sep 2014 –
CTBUH 2014 Shanghai Conference Proceedings; Xiangdong Du, Chien-Shen Lee, Bujar Morava & Jon Galsworthy, RWDI
A considerable number of supplemental damping system implementations are for wind induced motion control of skyscrapers and their performance has been validated through full scale monitoring during wind storms or seismic events. Among the passive…

Friend or Foe - Wind at Height
Mar 2008 –
CTBUH 2008 8th World Congress, Dubai; Peter Irwin, John Kilpatrick & Andrea Frisque, RWDI
Wind is often regarded as the foe of tall buildings since it tends to be the governing lateral load but Wind has some potential beneficial effects particular to tall buildings.

The Wind Engineering of the Burj Dubai Tower
Oct 2005 –
CTBUH 2005 7th World Congress, New York; Peter Irwin, RWDI
The Burj Dubai tower will be the world’s tallest building by a wide margin when completed. Wind is the dominant lateral load and thus governed many aspects of the architectural and structural design. In order to optimize the design for wind an…

Recent Applications of Damping Systems for Wind Response
Feb 2001 –
CTBUH 2001 6th World Congress, Melbourne; Peter Irwin & Brian Breukelman, RWDI
A traditional solution to the problem of excessive motion of tall buildings under wind action is to add more structure so as to stiffen the building and increase the mass. However, another approach is to supplement the damping of the structure. Some…